This table shows the distribution of winning times in the Kentucky Derby (a horse race) over 62 years.

Kentucky Derby Winning Times, 19302016 (seconds)
	From		To	f
	119		120	1
	120		121	2
	121		122	10
	122		123	15
	123		124	12
	124		125	10
	125		126	7
	126		127	3
	127		128	2
			Total	62

Click here for the Excel Data File (a) Fill in the highlighted cells in the table below. (Round your answers to 2 decimal places.)

From		To		Frequency (f)				Midpoint (m)				fm				f(m xx )2
119		120			1
120		121			2				120.50				241.00
121		122			10				121.50				1,215.00
122		123			15				122.50				1,837.50
123		124			12								1,482.00
124		125			10				124.50				1,245.00
125		126			7				125.50				878.50
126		127			3				126.50
127		128			2				127.50				255.00
		Total			62
Average =			Standard Deviation =										CV = %

I Midpoint TO 120 Frequency (E) 1 2 From 129 120 121 122 123 124 125 126 127 V V V V V V V V 10 15 12 121